There are 140 balls in Victoria's collection. The number of her grey balls is 4 times the number of her pink balls.
- How many pink balls does she have?
- How many grey balls does she have?
(a)
Number of pink balls = 1 u
Number of grey balls = 4 u
Total number of balls
= 1 u + 4 u
= 5 u
5 u = 140
1 u = 140 ÷ 5 = 28
Number of pink balls
= 1 u
= 28
(b)
Number of grey balls
= 4 u
= 4 x 28
= 112
Answer(s): (a) 28; (b) 112